baber/WOPTO huggingface dataset:
Patent GB-1309448-A (GB)
Title: Semiconductor switching devices
IPC: H01L29/00
Filed: 1970-04-29
Abstract: 1309448 Semi-conductor switching devices GENERAL ELECTRIC CO 29 April 1970 [1 May 1969] 20608/70 Heading H1K An end zone of an asymmetric switch comprises a main region A bearing a main electrode 17 and an auxiliary region of the same conductivity type as the main region and at least in part integral therewith. The auxiliary region consists of three sections. The first section (B<SP>11</SP> or C) is contiguous with an edge of the second section and is the only part of the switch to which a trigger signal is applied. The trigger signal may be in the form of infra-red radiation or may (with the embodiments shown) be in the form of an electrical gate drive (hard or soft) applied via an aluminium wire 19 welded to the semi-conductor to produce a non-ohmic contact therewith presenting a voltage variable impedance. The second section, one edge of which is contiguous with the first, may be unitary (B<SP>1</SP>, Fig. 2a) or in separated parts (B<SP>1</SP> + C<SP>1</SP>, Fig. 5) and has its surface covered with electroconductive material 21 which is electrically continuous, this being achieved by external connection 30 if necessary. The third section B is contiguous with another edge of the second section and with the main region A but bears no electrode. Several modified structures are described which have similar features, the structure of Fig. 4 (not shown) being a starting point for many. More than one auxiliary region may be provided. With two, each having a respective gate lead, the gates may be energized alternately or simultaneously.
Patent GB-440553-A (GB)
Title: Improvements in or relating to the preservation of marine-animal products
IPC: A23B4/033
Filed: 1935-07-20
Abstract: Livers of marine animals such as whales and seals are preserved by finely comminuting the fresh livers, drying on heated rollers to reduce substantially the moisture content, generally to about 35-45 per cent, rapidly cooling the product and packing it into substantially airtight containers in a compacted form.  The rollers are hollow and may be heated with steam at a pressure of 60-80 lbs. per sq. in., and the material may be passed repeatedly over them until dried to the desired extent.  The material is cooled as quickly as possible, e.g. to 25 DEG  C. in a water-jacketed worm conveyer or cooling drum, and packed in drums in which it is pressed down to expel air and the drums closed.
Patent GB-1219407-A (GB)
Title: Improvements relating to valves
Inventor: CRAIG THOMAS ALEXANDER
IPC: F16K27/08
Filed: 1967-05-04
Abstract: 1,219,407. Valves. GLENFIELD & KENNEDY Ltd. 25 April, 1968 [4 May, 1967], No. 20768/67. Heading F2V. In a gate valve having a casing 3, an intermediate cover 4, a top cover 5 and a gate 2 which is displaceable by means of a threaded shaft 1, locking and sealing of the valve when in its open position, i.e. with the gate raised, is effected by means of a cap 7 which is adapted to be screw threaded on to the shaft and into engagement with the top cover, a gasket 8 being interposed between the cover and the cap. The topmost ends 6 and 10 of both the shaft and the cap respectively, are shaped to facilitate engagement thereof by means of a turning key, and sealing rings 9 are provided on the shaft within the bore formed in the cover 5.
Patent GB-819350-A (GB)
Title: Improvements relating to pistols and the like
IPC: F41A3/48
Filed: 1955-07-19
Abstract: 819,350. Smallarms. JUREK, M. K. Oct. 16, 1956 [July 19, 1956], No. 20797/55. Class 119 Relates to smallarms of the type having a manually operable breech block which carries the firing pin and is slidably mounted in guides on the breech body for longitudinal movement towards and away from the barrel chamber for loading and unloading. According to the invention the breech body 1, Fig. 1, is provided with a spring-loaded catch or, as shown, a spring loaded plunger 6 adapted to engage in a socket 8 in the breech block 2 to lock it in the firing position and to engage an abutment 15 on the breech block to hold it in the unloading position, manually operable release means being provided on the breech block 2 for depressing the catch or plunger 6 and unlocking the breech block when in the firing position. As shown the release means comprises a lever 10 pivoted at 11 on the breech block 2 and having a lateral arm 12, Fig. 3, which passes through a slotted wall 13 of the block 2 and lies in the base of the socket 8. By depressing the lever, the plunger 6 is moved from the socket 8. Alternative means, such as a slide may be provided for affecting this operation. The underside of the breech block 2 is provided with a ramp 14, Fig. 1, the extreme end of which forms the abutment 15.
Patent GB-845722-A (GB)
Title: Variable speed drive
Inventor: LONG JOHN RUSSELL
IPC: F16H61/662
Filed: 1957-07-02
Abstract: 845,722. Expanding pulley gearing. SHUFORD MILLS Inc. July 2, 1957, No. 20833/57. Class 80 (2). A fluid-operated V-belt expanding pulley comprises one or more pairs of flanges 31, 42, 37, 50, a cylinder 62 fixed to an axially movable sleeve 30 to which the flanges 31 and 37 are fixed and on which are independently axially slidable flanges 42, 50 connected to a piston 61. The sleeve 30 is integral with the flange 31, and bolts 40 hold the flange 37 against a shoulder 36 on the sleeve. The flanges 42, 50 are bolted together at 51; spaced by distance pieces 43 integral with the flange 42; and slide together on a key 45 fast on the sleeve 30. The sleeve 30 is free to move axially between a shoulder 21 on a sleeve 22 keyed and set screwed on the driving shaft 10 and a snap-ring 25. When a flexible tube 65 is inflated by attaching the usual nozzle of a compressed-air line to an inlet 70 containing a non-return valve (Fig. 7, not shown), the piston 61 is moved to the right, contracting the pulley, Fig. 5, the belts realigning themselves by axial movement of the sleeve 30 and cylinder 62. On release of the air pressure by opening the valve 70, the flanges are expanded by the tension of the belts, Fig. 6. The inflation valve 70 may be replaced by a rotating fitting permanently connected to a controllable air line. The belts drive a fixed diameter pulley on a solidlymovable drive shaft or a variable diameter pulley on a non-movable drive shaft. Specifications 845,723, 845,724 and 845,725 are referred to.
Patent GB-597311-A (GB)
Title: Improvements in devices for grinding cutlery
IPC: B24B3/54
Filed: 1945-08-14
Abstract: 597,311. Grinding cutlery. AKTIEBOLAGET ELEKTROLUX. Aug. 14, 1945, No. 20845. Convention date, Oct. 24, 1944. [Class 60] A device for grinding cutlery includes a rotating grinding disc structure having a deep acute-angled groove around its periphery and a separating member at the apex of the groove, the device being used for grinding both faces of a knife edge simultaneously. The grinding disc comprises two halves 15, 16 screwed together at 17, the disc 15 being formed with a boss 19 having secured thereto a rubber driving roller 13 driven by frictional contact with a rotating container 10 of a kitchen machine, of the type, for example, as described in Specification 536,727, [Group II]. The grinding disc structure is rotatably supported on an arm 20 of a resilient support 14 secured at its other end by a rubber bushing in an aperture 25 in the machine frame. The discs 15, 16 may have carborundum inserts, Fig. 6, or, as in Fig. 3, an annulus 28 of emery cloth may be used. The grinding material is covered at the base of the groove 29 by a paper ring 30 to protect the extreme edge of the knife.
Patent GB-364644-A (GB)
Title: Improvements in or relating to static regulating apparatus for alternating current voltages
IPC: G05F3/06
Filed: 1930-07-10
Abstract: 364,644. Static transformer systems ; automatic regulation. SCO. ANON. POUR L'EXPLOITATION DES PROC’D’S M. LEBLANC-VICKERS, 12, Rue Portalis, Paris. July 10, 1930, No. 20938. Convention date, July 24, 1929. [Class 38 (iv).] Relates to static voltage regulating apparatus comprising unsaturated and saturated magnetic circuits 1, 5 and windings arranged to give a desired voltage transformation, those, for example 2, 6 in the primary circuit being divided between the magnetic circuits and connected in series and those, 4, 8, in the secondary circuit being similarly divided, but connected in series opposition. To obtain a proper regulation of the mean and effective output voltages a correcting electric circuit is used and comprises a capacity such as a battery of condensers 11 and a resistance 12 connected in series with coils, e.g. 3, 7, associated respectively with each of the magnetic circuits and connected in opposition. A transformer arrangement is shown in Fig. 1, and an auto-transformer arrangement in Fig. 4. The connecting circuit may be combined with the secondary circuit as is indicated, for example, in Fig. 4. Other arrangements are also described and illustrated, in one of which an autotransformer with a saturated magnetic circuit is used with a reactance the connecting circuit being connected across the output terminals. A condenser 36 may be used to improve the power factor. Several arrangements may be connected in cascade to obtain a very well regulated voltage.
Patent GB-372170-A (GB)
Title: Improvements relating to copying photogrpahic negatives
IPC: G03C5/02
Filed: 1931-07-23
Abstract: 372,170. Determining printing exposure. 1. G. FARBENINDUSTRIE AKT.- GES., Frankfort-on-Main, Germany. July 23, 1931, No. 21084. Convention date, July 23, 1930. [Class 98 (i).] To determine the time of exposure and type of paper to be used in printing from a negative, density measurements of the densest and thinnest parts of a negative are made by means of two graduated wedges 3, 4, using a common source of light 11, two reference fields 1, 2 and a common test field 7. The graduated wedges 3, 4, in the form of drums, may have overlapping lateral extensions. The extension 8 on the drum 3 has a series of slots 9 which expose one of a series of readings 10 on the extension on the wedge drum 4. These readings give the type of paper suitable and the appropriate exposure. According to the Specification as open to inspection under Sect. 91 (3) (a) it is possible to transmit electrically or mechanically the time of exposure read off from the scale to the timing clock or to a lamp resistance. This subject-matter does not appear in the Specification as accepted.
Patent GB-365121-A (GB)
Title: Improvements in or relating to decorating the surfaces of articles
IPC: B05D5/06
Filed: 1930-07-11
Abstract: A process for decorating surfaces consists in the application to the surfaces of liquids, charged with materials in suspension and having a viscosity increasing with evaporation, so that as the liquid evaporates, the suspended particles move by convection and are finally deposited as the liquid becomes viscous.  Cellulose varnishes, varnishes with gums and resins as the base, and colloidal solutions, such as gelatine or agar-agar, may be used as liquids and powdered metal or "Orient essence" are given as examples of materials to be used in suspension.
Patent GB-1022941-A (GB)
Title: Improvements relating to the clarification of aqueous media
IPC: B01D12/00
Filed: 1964-05-21
Abstract: A process for clarifying an aqueous medium containing dispersed carbon particles comprises maintaining the medium as a flowing stream, contacting the carbon particles therein with fine droplets of a water-immiscible liquid having an affinity for the carbon particles issuing from a source substantially contiguous with the stream so that the carbon particles agglomerate, allowing the agglomerates to coalesce into a layer and separating this layer from the aqueous medium. The water-immiscible liquid may be a hydrocarbon oil such as a fuel oil and it may be sprayed into the aqueous medium in such a way that the droplets, which may be less than 200 microns in diameter, travel transversely across the whole of the stream of the aqueous medium. The aqueous medium may contain particles of amorphous carbon, of size less than 30 microns, and in amount of about 0.2% by weight.  A form of apparatus for carrying out the process is described and illustrated.
Patent GB-1260535-A (GB)
Title: High-speed printer employing a gas discharge matrix
IPC: G06K15/10
Filed: 1969-04-25
Abstract: 1,260,535. Discharge apparatus. MASSACHUSETTS INSTITUTE OF TECHNOLOGY. 25 April, 1969 [26 April, 1968], No. 21137/69. Heading H1X. [Also in Division B6] A high-speed selective printer comprises an insulating medium 4 formed with an array of perforations 5, each perforation including a pair of electrodes A, B adapted to selectively ionize gas within the perforations, the ionized gas being used to mark a record medium. Further electrodes 2, 3 are provided to maintain gas in the selected perforations in an ionized state for sufficient time to effect the marking. The electrode 2 may be perforated at 2<SP>1</SP> so that ionized gas expands out of the perforations to impinge on a record medium placed above the electrode 2. Alternatively the record medium (7, Fig. 4, not shown) may be passed between the medium 4 and the electrode 2<SP>11</SP>. In further modifications the record medium may itself form one electrode, or may be in contact with the upper electrode, in each case the record medium being conducting. The record medium may be marked thermally, e.g. by the hot ionized gas striking a thin white wax coating on a dark surface such as dyed paper, or by development of electrostatic charges formed on the medium, or chemically, e.g. by employing paper coated with sodium or potassium ferrocyanide, and developing with a tannic acid mist. The material 4 may be glass or ceramic. The electrodes A, B may be printed circuitry or single wires. The gas to be ionized may be atmospheric air, or nitrogen, argon or carbon dioxide in a controlled atmosphere.
Patent GB-1502967-A (GB)
Title: Glanzing system and strip
IPC: E06B3/68
Filed: 1975-05-19
Abstract: 1502967 Glazing SCHLEGEL CORP 19 May 1975 [20 May 1974] 21185/75 Heading E1R A glazing system comprises a frame with laterally spaced channels, two glazing strips located with their base portions interlocked in the channels and free portions engaging opposite side of the glazing, each strip comprising a reinforcing member 16 and a resilient cover. The strips and channels are interlocked by complementary hooks or notches. The reinforcement 16 comprises a zig-zag (18) of wire or resin held together by stitching (19) or may comprise perforated or notched metal strips or plastics sheet. Adjacent channels may be perpendicular (Fig. 5) and strips may abut to form a cold bridge between adjacent panes. The channels are extruded with a metal or resin frame or embedded in a concrete frame (42, Fig. 6).
Patent GB-920557-A (GB)
Title: Fluid drive
IPC: F16D33/08
Filed: 1961-06-13
Abstract: 920,557. Hydraulic couplings. AMERICAN RADIATOR & STANDARD SANITARY CORPORATION. June 13, 1961 [June 23, 1960], No. 21269/61. Class 69 (2). An hydraulic coupling comprises an impeller 54, runner 56, a scoop chamber 46 for maintaining a desired level of fluid in the coupling, and fluid outlet passage means 105 carried by the runner for removing fluid from the coupling during acceleration of the impeller above the speed of the runner. The passage means 105 are formed in an end wall 104 of the runner and, at one end, open into the working chamber 66 of the coupling to face fluid discharged from the impeller, and at the other end have nozzles 113 which can be replaced by others having different characteristics and open into the scoop chamber 46 connected by an opening 111 to a reservoir 86. The working chamber of the coupling is also connected by openings 50 with the scoop chamber and the fluid level in this coupling is normally controlled by an adjustable scoop tube 70 which discharges into the reservoir 86 and is connected by rack-and-pinion gearing 77, 102 to a manually or automatically movable rod 103. The fluid in the reservoir is forced by a pump 88, which is driven by a chain 90 from an input shaft 28, through a pipe 98, cooler 100 and pipe 58 to a channel 60 connected by passages 62, 64 to the working circuit of the coupling. During operation, fluid displaced by the impeller enters the passages 105 and if the pressure is sufficiently high as a result of excessive acceleration of the impeller above the speed of the runner or overloading of the latter, the fluid flows through the passage 105 against centrifugal force into the reservoir to limit the quantity of fluid in the coupling and the torque transmitted. The nozzles 113 of some of the passages may be at different radial positions to those of the others and the passages may be formed as tubes secured to the back of the runner. Some of the fluid from the line 58 leading from the cooler 100 may be directed by a by-pass valve 59 into a line 61 connected to the reservoir.
Patent GB-480512-A (GB)
Title: Air conditioning apparatus
IPC: F24F3/14
Filed: 1937-08-03
Abstract: 480,512. Conditioning air. SAWKINS, W. Aug. 3, 1937, No. 21360. [Class 137] [Also in Group XII] Air-conditioning apparatus comprises a mist chamber 6 housing a transverse rapidly rotating drum 13 producing a mist by dipping into or skimming over liquid contained in a tank 8 at the base of the chamber, which has a louvred air inlet 7 and corrugated baffles 15 at the outlet to remove surplus moisture, and a heating chamber 17 with finned resistances 20 above the mist chamber. Air entering by a gauze screen 3 is drawn up into the heating chamber, which may contain an ozonizer 18, by a fan 4 and is discharged through a conical deflector 22 with a gauze skirt 23. A transverse baffle 14 prevents loss of spray through the louvres 7, and an aperture 12 in a partition 11 allows return of water from the baffles to the drum.
Patent GB-411316-A (GB)
Title: Improvements in and relating to the illumination of roads, public places and the like
IPC: E01F9/615
Filed: 1933-07-31
Abstract: 411,316. Street &c. lamps. GUICHERD, L., 9, Boulevard de Villiers, Neuillysur-Seine, France. July 31, 1933, No. 21410. Convention date, July 30,1932. [Class 75 (iv).] Means for illuminating a street or like outdoor space, without projecting any light upwardly, comprises a light source 2 masked at its lower half and separated by a reflector 1 from the interior wall of a hollow pillar or post 9, the latter being provided opposite the light source with an opening 10 the upper edge of which lies in the same horizontal plane A-B as the upper edge of the means serving to mask the lower half of the light source. The masking means may comprise a hemispherical cup 3, Fig. 1, or a vertical screen 11, Fig. 2. Two such projectors may be coupled together and used like a single projector. The Specification as open to inspection under Sect. 91 states that the projectors are of general application and that they may be used in rooms, docks, dockyards, stations, aerodromes, race tracks for motor cars, bridges of ships, and on buoys ; they may be mounted in pairs inclined to one another on the tops of street lamp posts ; and they may be mounted on short pillars, or at the four corners of a rectangular room, and be so disposed as to project all the light upwardly on to the ceiling. This subject-matter does not appear in the Specification as accepted.
Patent GB-376513-A (GB)
Title: An improved apparatus for making dental castings
IPC: A61C13/18
Filed: 1931-07-27
Abstract: 376,513. Dental casting-machines. WEGE, A. S. F., Hultsfred, Sweden. July 27, 1931, No. 21435. [Class 83 (i).] In a dental casting-machine the disc 15 which carries the flask 3 is rotated, during the melting of the gold or other metal by burners 2, by means of chain gearing 16, 18 and a handle 19. The flask is centred on a plate 14 of the disc 15 by a member 13 of suitable size. The molten metal may be forced into the mould cavity by evacuating it or by applying wet asbestos carried by a cover 12 on a handlever 9.
Patent GB-840892-A (GB)
Title: Azaphenothiazine compounds and their preparation
IPC: C07D417/06
Filed: 1956-07-11
Abstract: The invention comprises 1-azaphenthiazine derivatives of the formula <FORM:0840892/IV(b)/1> and acid-addition salts thereof (R and R1 represent hydrogen, halogen, hydroxy, lower alkyl or lower alkoxy of less than 8 carbons, n is less than 4, A represents lower alkylene, hydroxy (lower alkylene), or oxo (lower alkylene) of less than 8 carbons, B is a primary, secondary or tertiary amino group or a nitrogen-containing heterocyclic radical) also a process for preparing a 10-substituted 1-azaphenthiazine or salt thereof by interacting a 2-(21-aminophenylthio)-3-nitropyridine or its N-acylated derivative with a base, preferably an alkali.  The 2 - (21 - aminophenylthio) - 3 - nitropyridines themselves are obtainable by intermixing a 2-aminobenzenethiol with a 2-halo-3-nitropyridine in the presence of a base, particularly an alkali metal hydroxide, carbonate or alcoholate.  Other standard methods suitable for preparing the compounds of the invention are described.  Examples detail the preparation of 2 - (21 - aminophenylthio) - 3 - nitropyridine, 2 - (41 - chloro - 21 - aminophenylthio) - 3 - nitropyridine, 2 - (21 - aminophenylthio) - 6 - chloro-3 - nitropyridine, 21 - (3 - nitro - 2 - pyridylthio)-21 - (3 - nitro - 2 - pyridylthio) - 41 - chloro - and 21 - (6 - chloro - 3 - nitro - 2 - pyridylthio) - acetanilide, 1-azaphenthiazine and its 10-acetyl-, 8 - chloro - 10 - acetyl -, 2 - chloro - 10 - acetyl-, 8-chloro- and 2-chloro-derivatives and their conversion into various 10-dialkylaminoalkyl, pyrrolidinoalkyl, piperidinoalkyl and 10 - (hydroxy substituted)-dialkylaminoalkyl 1-azaphenthiazines of the general formula(I).  10 - (2 - Cyanoethyl) - 1 - azaphenthiazine is prepared from 1-azaphenthiazine and acrylonitrile in the presence of benzyltrimethylammonium hydroxide.  Reference has been directed by the Comptroller to Specification 806,531.
Patent GB-915527-A (GB)
Title: Apparatus for extracting components in gaseous form from solid fuel
IPC: E21B43/243
Filed: 1959-06-23
Abstract: 915,527. Refrigerating. WHARNCLIFFE, COUNTESS OF. Aug. 26, 1960 [June 23, 1959], No. 21568/59. Addition to 839,973. Modified by 901,640. Class 29. [Also in Group XII] A condenser 12 for condensing condensible constituents of gases evolved during the distillation of coal (see Group XII) has a refrigerating coil 13 in a tube 14 which is capped by a baffle 15. The flow 16 of the condenser slopes towards an outlet 17 for condensate.
Patent GB-1429683-A (GB)
Title: Benzothiadiazoles
IPC: C07D417/12
Filed: 1973-05-07
Abstract: 1429683 Benzothiadiazoles WANDER Ltd 7 May 1973 [9 May 1972] 21631/73 Heading C2C Novel compounds (I) (including salts thereof) where R 1 , R 2  and R 3  are H, halogen, alkyl, alkoxy, NO 2 , CN, OH or alkylthio, but excluding 4 - (2 - imidazolin - 2 - yl - amino) - 5 - chloro- 2,1,3-benzothiadiazole, are made by reacting compounds (II), (IV) or (VI) with ethylene diamine, by ring closing compounds (V) or by halogenating (I) (R 4  is a reactive group other than halogen, X and Z are reactive groups with the proviso that when X is halogen Z is halogen and Y is O or S). Pharmaceutical preparations showing antirigor and anti-tremor activity contain (I) as active ingredient. Administration is orally or parenterally.